Resonant X-ray Raman scattering from dense gases and solutions
2001 (English)In: Chemical Physics Letters, ISSN 0009-2614, E-ISSN 1873-4448, Vol. 346, no 06-maj, 437-442 p.Article in journal (Refereed) Published
To complement conventional theory of resonant X-ray Raman scattering (RXS) adapted either for rarefied gases or solids, we propose a theory and corresponding analysis for RXS from dense gases and solutions. We show that the dephasing broadening of the spectral lines due to interaction with buffer or solvent particles qualitatively changes the physics of the X-ray scattering. The dephasing results in an additional, two-step (TS) scattering, contribution to the RXS cross-section, which interferes with the Raman one-step (OS) channel and which shows a nondispersive behaviour, This results in a doubling of the spectral lines by detuning the excitation frequency away from resonance. The theory is demonstrated numerically for RXS of formaldehyde in solution.
Place, publisher, year, edition, pages
2001. Vol. 346, no 06-maj, 437-442 p.
IdentifiersURN: urn:nbn:se:kth:diva-21019ISI: 000171582700014OAI: oai:DiVA.org:kth-21019DiVA: diva2:339716
QC 201005252010-08-102010-08-10Bibliographically approved